Regressed by dEQP's commit:
gles31:es31fSSBOLayoutTests limit m_maxBlocks and m_maxBlockMembers for low ram device
Based on the commit message, this may be a bug in dEQP, not a conformance issue in Mesa
another bug was opened later for this issue, which has a longer discussion.
*** This bug has been marked as a duplicate of bug 109532 ***